package com.cy.pj.common.config;

import org.apache.shiro.cache.CacheManager;
import org.apache.shiro.cache.MemoryConstrainedCacheManager;
import org.apache.shiro.mgt.RememberMeManager;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.realm.Realm;
import org.apache.shiro.session.mgt.SessionManager;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.CookieRememberMeManager;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.apache.shiro.web.servlet.SimpleCookie;
import org.apache.shiro.web.session.mgt.DefaultWebSessionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.LinkedHashMap;
import java.util.Map;

@Configuration//这个注解描述的类要交给spring框架管理的一个配置对象
public class SpringShiroConfig {

    @Bean
    public SessionManager sessionManager(){
        DefaultWebSessionManager sessionManager=new DefaultWebSessionManager();
        sessionManager.setGlobalSessionTimeout(60*60*1000);
        sessionManager.setSessionIdUrlRewritingEnabled(false);
        return sessionManager;
    }

    @Bean
    public RememberMeManager RememberMeManager(){
        CookieRememberMeManager cookieRememberMeManager=new CookieRememberMeManager();
        SimpleCookie cookie=new SimpleCookie("rememberMe");
        cookie.setMaxAge(7*24*60*60);
        cookieRememberMeManager.setCookie(cookie);
        return cookieRememberMeManager;
    }

    //配置
    @Bean
    public CacheManager shoroCacheManager(){
        return new MemoryConstrainedCacheManager();
    }

    @Bean//
    public SecurityManager securityManager(Realm realm,CacheManager cacheManager,RememberMeManager rememberMeManager,SessionManager sessionManager){//此对象为shiro框架的核心
        DefaultWebSecurityManager securityManager=new DefaultWebSecurityManager();
        securityManager.setRealm(realm);
        securityManager.setCacheManager(cacheManager);
        securityManager.setRememberMeManager(rememberMeManager);
        securityManager.setSessionManager(sessionManager);
        return securityManager;
    }

    @Bean//此对象中要配置一些访问规则（匿名访问的资源，认证的访问的资源）
    public ShiroFilterFactoryBean shiroFilterFactoryBean(SecurityManager securityManager){
        ShiroFilterFactoryBean factoryBean=new ShiroFilterFactoryBean();
        factoryBean.setSecurityManager(securityManager);//securityManager
        factoryBean.setLoginUrl("/doLoginUI");
        Map<String,String> filterMap=new LinkedHashMap<>();
        //静态资源允许匿名访问:"anon"
        filterMap.put("/bower_components/**","anon");//这里的anon对应着shiro中的一些默认过滤器
        filterMap.put("/build/**","anon");
        filterMap.put("/dist/**","anon");
        filterMap.put("/plugins/**","anon");
        filterMap.put("/user/doLogin", "anon");
        filterMap.put("/doLogout", "logout");
        //除了匿名访问的资源,其它都要认证("authc")后访问
        filterMap.put("/**","user");//authc
        factoryBean.setFilterChainDefinitionMap(filterMap);//过滤链的定义
        return factoryBean;
    }
    //配置授权检测顾问
    @Bean
    public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor (SecurityManager securityManager) {
        AuthorizationAttributeSourceAdvisor advisor= new AuthorizationAttributeSourceAdvisor();
        advisor.setSecurityManager(securityManager);
        return advisor;//此对象关联着切入点和通知对象
    }
}
